Fish sonar

Details Fish sonar Fish sonar

1985-08-16

1987-03-17

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367115, G01S 1596

Patent

active

046513094

ABSTRACT:
In the fish sonar, the temperature and the hydrogen ion exponent in the sea are recorded or displayed on the recording medium or display of the recording or displaying device with digital echo signals of an ultrasonic wave corresponding to a base line, a school of fish and the bottom in the sea. The fish sonar need not have an exclusive device for measuring temperature and hydrogen ion exponent in the sea.

REFERENCES:
patent: 3673552 (1972-06-01), Mross et al.
patent: 4096484 (1978-06-01), Ferre et al.
patent: 4122428 (1978-10-01), Morrow, Jr.
patent: 4205395 (1980-05-01), Shortridge

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